Short Answer 
The issue arose over 18-year-olds being drafted into the military without the right to vote, seen as unfair by many. This led to legal challenges and advocacy for change, culminating in the ratification of the 26th Amendment in 1971, which granted voting rights to 18-year-olds, ensuring their participation in the democratic process.
Step 1: Understanding the Issue
The main point of contention was that 18-year-olds were allowed to be drafted into the military but were not granted the right to vote. This created a sense of unfairness among the youth. Many believed that if an individual was old enough to fight for their country, they should also be entitled to participate in the democratic process by voting.
Step 2: Legal and Constitutional Challenges
The situation prompted discussions about the Constitution and the rights of citizens. It was argued that it was unconstitutional to allow young adults to serve in the military while denying them the right to vote. Advocacy groups worked to highlight this discrepancy, pushing for legal changes to rectify the situation.
Step 3: The Change in Voting Rights
This movement ultimately led to a significant change in voting laws. The 26th Amendment to the United States Constitution was ratified in 1971, allowing 18-year-olds to vote. This amendment ensured that those who could fight in wars were also given a voice in choosing their government, thereby promoting fairness and equality.